How to check if your PDF is print-ready

You've finished the design. The client approved it. The printer is waiting. And somewhere in the back of your mind, a small voice says: did I set up the bleed? Are the fonts embedded? Is this actually CMYK?

That feeling has a name among designers: print paranoia. And the fix isn't checking harder — it's knowing exactly what to check.

The five things that actually matter

Print shops reject files for a surprisingly small number of reasons. If you get these five right, you'll pass preflight at almost any commercial printer.

1. Color space: CMYK, not RGB

Your screen displays color with light (RGB). A press prints color with ink (CMYK). When a printer converts your RGB file to CMYK on their end, colors shift in ways you didn't approve. Reds drift toward orange. Bright blues go purple. Vivid greens get dull.

The fix: export from your design tool with a CMYK destination profile. In the EU, FOGRA39 (coated) or FOGRA47 (uncoated) are standard. In the US, GRACoL or SWOP. If you're not sure, ask your printer — they'll tell you in one sentence.

2. Bleed: 3 mm (or whatever your printer says)

Bleed is the extra area beyond the trim line where your background, images, or color extends. When the printer cuts the paper, the blade isn't perfectly precise. Without bleed, you get thin white slivers along the edges.

The standard in Europe is 3 mm on all sides. In the US it's 0.125 inches (3.175 mm). But some printers ask for 5 mm, and others have specific requirements for spine bleed on booklets. Always check the spec sheet.

In InDesign: File → Document Setup → Bleed. In Illustrator: File → Document Setup → Bleed. In Figma: there's no native bleed setting — you have to make your frame larger than the final trim size by twice the bleed amount on each side.

3. Fonts: embedded, not referenced

If a font isn't embedded in the PDF, the printer's system substitutes one it has. Your carefully chosen headline typeface becomes something that looks close but isn't — and the text reflows because the metrics are different.

The safest way to ensure fonts are embedded is to use a PDF/X preset when exporting. Both PDF/X-1a and PDF/X-4 embed all fonts by default. If your design tool doesn't offer PDF/X presets, look for an "Embed All Fonts" checkbox in the export settings.

An alternative is converting all text to outlines (paths). This eliminates the font dependency entirely but makes the text uneditable. Some printers specifically ask for outlined text — check their spec sheet.

4. Image resolution: 300 DPI for press, 150 DPI for large format

DPI (dots per inch) measures how much detail an image has at a given print size. A photo that looks sharp on screen at 72 DPI will look soft and blurry when printed at the same physical size because the press needs much more data.

The rule of thumb: 300 DPI at the placed size for anything that will be held in hand (flyers, business cards, booklets). 150 DPI for large format (posters, banners) because the viewing distance is greater. Below these thresholds, the human eye sees the image break down.

Check effective resolution in InDesign: Window → Links → look at the "Effective PPI" column. In Illustrator: Window → Links → PPI. If any image is below the threshold, replace it with a higher-resolution version or scale it smaller in the layout.

5. Page count: does it work for your binding?

This one only matters for booklets and multi-page documents. Saddle-stitched booklets (stapled in the center) must have a page count that's a multiple of 4. Perfect-bound books are more flexible but still have requirements.

If your booklet has 14 pages and the binding needs a multiple of 4, you need to add 2 blank pages (to reach 16) or remove 2 pages. Your printer will reject a 14-page saddle-stitched file because the imposition math doesn't work.

What most designers actually do

Here's the honest answer from every Reddit thread and design forum we've read: most freelance designers export a "High Quality Print" PDF, hope for the best, and rely on the printer to catch problems. The printer either fixes the file silently (and charges for it), rejects it without clear explanation, or prints it as-is and the designer absorbs the cost of a reprint.

That's the gap PrintPress fills. Instead of hoping, you upload your PDF and get a plain-language report on exactly these five checks — with the specific values detected, the specific values your printer requires, and step-by-step fix instructions for your design tool.

A checklist you can use right now

Before you send any file to print, verify these five things:

1. Color space is CMYK (not RGB) with the correct destination profile for your printer.
2. Bleed is set to your printer's required value and background/imagery extends to the bleed edge.
3. All fonts are embedded (use a PDF/X preset) or converted to outlines.
4. Every image is at least 300 DPI at its placed size (150 DPI for large format).
5. Page count is correct for the binding method (multiple of 4 for saddle-stitched).

If all five pass, your file is ready. If any fail, you know exactly what to fix before you hit send.